Naturally, he took a selfie and posted it to Instagram, reminding fans to vote early if they can.

“Hey! You! Yeah, YOU! I just flew from LA to Memphis to#rockthevote !!! No excuses, my good people,” Timberlake wrote. “There could be early voting in your town too. If not, November 8th! Choose to have a voice! If you don’t, then we can’t HEAR YOU! Get out and VOTE! #excerciseyourrighttovote”

Now, Timberlake could be in trouble for snapping the voting booth photo.

Last year, Tennessee’s governor signed a bill allowing voters to use their cellphones at polling stations for “informational purposes to assist the voter in making election decisions.” However, taking photos or capturing video is not allowed.

The Shelby County District Attorney’s Office told Us Weekly that officials were “made aware of a possible violation of election law.” They’re now reviewing the incident.

Violators of the “no selfie” rule can face a 30-day jail sentence and a fine of up to $50.